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A shell-model description of 0 + intruder states in even-even nuclei

1987

38 pages

Published in:

Nucl.Phys.A 466 (1987) 189-226

Published: 1987

DOI:

10.1016/0375-9474(87)90439-8

View in:

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Abstract: (Elsevier)

Starting from the nuclear shell structure in medium-heavy and heavy nuclei, the excitation energy for low-lying 0 + intruder states is studied. Taking as a simplified model two particle-two hole (2p-2h) excitations across closed shells, the effects of the pairing and the proton-neutron (monopole and quadrupole component) residual interaction on the unperturbed energies are calculated. Application to major closed-shell ( fZ = 50, Z = 82) and to subshell ( Z = 40, Z = 64) regions is performed. We especially concentrate on 0 + intruder states in the even-even Pb nuclei.

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